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Biosocial perspective of consanguineous marriages in rural and urban swat, Pakistan

Published online by Cambridge University Press:  31 July 2008

Abdul Wahab
Affiliation:
Government Degree College, Matta, Swat, NWFP, Islamabad, Pakistan
Mahmud Ahmad
Affiliation:
Department of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan

Summary

Consanguineous marriages in two population samples, one rural and one urban, from Swat (Pakistan) were studied. The frequency of consanguineous marriages was found to be 37·13% and 31·11%, and mean inbreeding coefficients were calculated as 0·0168 and 0·0162, for the rural and urban populations respectively. The most frequent type of marriage was between first cousins, in both samples. Among first cousin marriages, those with father's brother's daughter were predominant. Mean inbreeding coefficient was higher for higher socioeconomic groups in both samples. Differences by ethnic and educational groups were also found. Contrary to previous studies, a significant increase in the incidence of consanguineous marriages over the years has been observed. The incidence of premature mortality was significantly higher only in the offspring of first cousin marriages. Significantly higher incidence of morbidity in the offspring of consanguineous marriages was also observed.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1996

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References

Afzal, M. A. (1984) Genetic Studies of Consanguinity and Lactose Malabsorption in Pakistan. MPhil thesis, Quaid-i-Azam University, Islamabad, Pakistan.Google Scholar
Ahmad, A. S. (1976) Millennium and Charisma among Swat Pathans: A Critical Essay in Social Anthropology. Routledge & Kegan Paul, London.Google Scholar
Alstrom, C. H. (1977) A study of incest with special regard to the Swedish penal code. Acta psychiat. scand. 56, 357372.CrossRefGoogle Scholar
Barth, F. (1981) Features of Person and Society in Swat: Selected Essays on Pathans, Vol. 2. Routledge & Kegan Paul, London.Google Scholar
Bittles, A. H. (1993) Inbreeding in human populations and its influence on fertility and health. J. biol. Educ. 27, 260266.CrossRefGoogle Scholar
Bittles, A. H. (1994) The role and significance of consanguinity as a demographic variable. Popul. Dev. Rev. 20, 561584.CrossRefGoogle Scholar
Bittles, A. H., Grant, J. C. & Shami, S. A. (1993) Consanguinity as a determinant of reproductive behaviour and mortality in Pakistan. Int. J. Epidemiol. 22, 463467.CrossRefGoogle ScholarPubMed
Bundey, S. & Alam, H. (1993) A five year prospective study of the health of children in different ethnic groups, with particular reference to the effect of inbreeding. Eur. J. hum. Genet. 1, 206219.CrossRefGoogle Scholar
Bureau of Statistics (1986) Important District-wise Socioeconomic Statistics of NWFP, 2nd edn. Planning and Development Department, Government of NWSP, Peshawar, Pakistan.Google Scholar
Fraser, F. C. & Biddle, C. J. (1976) Estimating the risks for offspring of first cousin marriages: an approach. Am. J. hum. Genet. 28, 522526.Google Scholar
Grant, J. C., Shami, S. A., Milligan, P. J. & Bittles, A. H. (1994) Counting the costs of human inbreeding: the application of relative and attributable risks to the assessment of consanguinity-associated mortality. Perspect. hum. Biol. 4, 4754.Google Scholar
Lindholm, C. (1982) Generosity and Jealousy. The Swat Pukhtun of Northern Pakistan. Columbia University Press, New York.Google Scholar
Marcallo, F. A., Freire-Maia, N., Azevedo, J. B. C. & Simoes, I. A. (1964) Inbreeding effect on mortality and morbidity in south Brazilian populations. Ann. hum. Genet. 27, 203218.CrossRefGoogle ScholarPubMed
Mian, A. & Mushtaq, R. (1994) Consanguinity in population of Quetta (Pakistan): a preliminary study. J. hum. Ecol. 5, 4953.Google Scholar
Morton, N. E. (1958) Empirical risks in consanguineous marriages. Birth weight, gestation time, and measurement of infants. Am. J. hum. Genet. 1, 261291.Google Scholar
Morton, N. E., Crow, J. F. & Muller, H. J. (1956) An estimate of the mutational damage in man from data on consanguineous marriages. Proc. natl. Acad. Sci. USA, 42, 855863.CrossRefGoogle ScholarPubMed
Rao, P. S. S., Inbaraj, S. G. & Jesudian, G. (1972) Rural-urban differentials in consanguinity. J. med. Genet. 9, 174178.CrossRefGoogle ScholarPubMed
Rao, P. S. S., & Inbaraj, S. G. (1977) Inbreeding effects on human reproduction in Tamil Nadu of South India. Ann. hum. Genet. 41, 8797.CrossRefGoogle Scholar
Reddy, V. R. & Rao, A. E. (1978) Inbreeding effects in a coastal village and other parts of Andhra Pradesh. Acta genet. med. Gemmell. 27, 8993.CrossRefGoogle Scholar
Schull, G. W. & Neel, J. V. (1965) The Effect of Inbreeding on Japanese Children. Harper & Row, New York.Google Scholar
Wright, S. (1922) Coefficient of inbreeding and relationship. Am. Nat. 56, 330338.CrossRefGoogle Scholar